Which layover airport offers the lowest fares from Helena to London?

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $589.

Which layover airport has the shortest connection time from Helena to London?

Denver (DEN) has the shortest average layover time for this route: 1h 15m.

Which airport is the most popular layover for flights between Helena and London?

Denver (DEN) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Helena to London?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 12h 00m.

When did momondo last update prices for flights from Helena Airport to London?

Prices for flights from Helena Airport to London were last updated today.

How old do you have to be to fly from Helena Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$609 Cheap Flights from Helena to London (HLN-LON) in 2025

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Helena to London (HLN-LON)

Round-trip

One-way

Cheap round-trip flights

1:00 pm - 10:00 amHLN-LHR

14h 00m1 stop

10:45 am - 10:37 pmLHR-HLN

18h 52m1 stop

$679

Find Deal

Fri, Nov 7 - Tue, Nov 18

5:45 am - 8:45 amHLN-LHR

20h 00m2 stops

10:10 am - 10:37 pmLHR-HLN

19h 27m2 stops

$684Delta

Find Deal

Fri, Nov 7 - Tue, Nov 18

5:18 pm - 7:40 amHLN-LHR

31h 22m2 stops

8:30 am - 10:14 pmLHR-HLN

20h 44m2 stops

$771United Airlines

Find Deal

Fri, Oct 10 - Sat, Oct 18

5:18 pm - 9:40 amHLN-LHR

33h 22m1 stop

8:30 am - 10:14 pmLHR-HLN

20h 44m2 stops

$773United Airlines

Find Deal

Fri, Oct 10 - Sat, Oct 18

5:18 pm - 9:40 amHLN-LHR

33h 22m1 stop

4:40 pm - 2:09 pmLHR-HLN

28h 29m2 stops

$776United Airlines

Find Deal

Fri, Oct 10 - Sat, Oct 18

5:18 pm - 6:55 amHLN-LHR

30h 37m2 stops

4:40 pm - 2:09 pmLHR-HLN

28h 29m2 stops

$782United Airlines

Find Deal

Fri, Oct 10 - Sat, Oct 18

6:18 pm - 6:55 amHLN-LHR

29h 37m1 stop

9:50 am - 5:41 pmLHR-HLN

14h 51m1 stop

$1,154

Find Deal

Fri, Oct 10 - Sat, Oct 18

6:18 pm - 6:55 amHLN-LHR

29h 37m1 stop

9:50 am - 5:41 pmLHR-HLN

14h 51m1 stop

$1,254

Find Deal

Fri, Oct 10 - Sat, Oct 18

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

United Airlines

Oct 10

HLN5:18 pmHelena

31h 22m

2 stops

LHR7:40 amLondon Heathrow

Oct 18

LHR8:30 amLondon Heathrow

20h 44m

2 stops

HLN10:14 pmHelena

$771

Find similar

United Airlines

Oct 10

HLN5:18 pmHelena

33h 22m

1 stop

LHR9:40 amLondon Heathrow

Oct 18

LHR8:30 amLondon Heathrow

20h 44m

2 stops

HLN10:14 pmHelena

$773

Find similar

United Airlines

Oct 10

HLN5:18 pmHelena

33h 22m

1 stop

LHR9:40 amLondon Heathrow

Oct 18

LHR4:40 pmLondon Heathrow

28h 29m

2 stops

HLN2:09 pmHelena

$776

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 11/7

1:00 pm-10:00 am

1 stop14h 00m

London Heathrow

Tue 11/18

10:45 am-10:37 pm

1 stop18h 52m

$679

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 11/7

5:45 am-8:45 am

2 stops20h 00m

London Heathrow

Tue 11/18

10:10 am-10:37 pm

2 stops19h 27m

$684

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 10/10

5:18 pm-7:40 am

2 stops31h 22m

London Heathrow

Sat 10/18

8:30 am-10:14 pm

2 stops20h 44m

$771

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 10/10

5:18 pm-9:40 am

1 stop33h 22m

London Heathrow

Sat 10/18

8:30 am-10:14 pm

2 stops20h 44m

$773

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 10/10

5:18 pm-9:40 am

1 stop33h 22m

London Heathrow

Sat 10/18

4:40 pm-2:09 pm

2 stops28h 29m

$776

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 10/10

5:18 pm-6:55 am

2 stops30h 37m

London Heathrow

Sat 10/18

4:40 pm-2:09 pm

2 stops28h 29m

$782

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 10/10

6:18 pm-6:55 am

1 stop29h 37m

London Heathrow

Sat 10/18

9:50 am-5:41 pm

1 stop14h 51m

$1,154

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 10/10

6:18 pm-6:55 am

1 stop29h 37m

London Heathrow

Sat 10/18

9:50 am-5:41 pm

1 stop14h 51m

$1,254

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Helena to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Layovers

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Helena to London is on a Monday. Travelers who choose to depart for London on a Monday will often find tickets for as low as $744. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,268. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

When to book flights from Helena to London

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Helena to London (HLN to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to London

Direct flights	None

There are no direct flights from Helena to London. There are no popular flight routes from Helena to London.

Search flight deals

How far is Helena to London by plane?
Helena and London are 4547.6 mi apart from one another. In terms of flight time, this usually takes a little over 14h 00m.
When did momondo last update prices for flights from Helena Airport to London?
Prices for flights from Helena Airport to London were last updated today.
How old do you have to be to fly from Helena Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Helena to London?
momondo data reveals that the most frequently booked airline on the route from Helena to London is United Airlines, representing 100% of all bookings.

Gatwick

Hounslow

Luton

Dover

Slough

Milton Keynes

Hayes

Guildford

Dartford

Stansted

Crawley

Chelmsford

Brentwood

Ilford

Folkestone

Colchester

Watford

Richmond

Wembley

Canterbury

Why use momondo?

Why should I use momondo to find a flight deal from Helena to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Helena to London with flexible booking policies on momondo?

Yes. All flights to London from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Helena to London.

I’m not ready to book a flight from Helena to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Helena and alert you when they change.